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TK5551 Datasheet

  • TK5551

  • STANDARD READ /WRITE ID TRANSPONDER WITH ANTI COLLISION

  • 10頁

  • ATMEL   ATMEL

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Features
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Read/Write Anti-collision ID Transponder in Plastic Package
Contactless Read/Write Data Transmission
Inductive Coupled Power Supply at 125 kHz
Basic Component: R/W IDIC
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e5551
Anti-collision Mode by Password Request
鈥?E.g. 10 Transponders Read Out in < 500 ms (RF/32, Maxblock 2)
Depending on the Application
Built-in Coil and Capacitor for Circuit Antenna
Starts with Cyclical Data Read Out
224-bit EEPROM User Programmable in 32-bit Blocks
Typically < 50 ms to Write and Verify a Block
Write Protection by Lock Bits
Malprogramming Protection
Options Set by EEPROM
鈥?Bit Rate [bit/s]: RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/100, RF/128
鈥?Modulation: BIN, FSK, PSK, Manchester, Bi-phase
Application
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Access Control Systems
Process Control and Automation Systems
Installation and Medical Equipment
Asset Management Systems
Standard
Read/Write ID
Transponder
with Anti-
collision
TK5551
Description
The TK5551 is a completely programmable R/W transponder which implements all
important functions for identification systems, including anti-collision (e.g., 10 tran-
sponders in < 500 ms depending on the application). It allows the contactless reading
and writing of data which are transmitted bi-directionally between a read/write base
station and the transponder. It is a plastic-packaged device which accommodates the
IDIC e5551 and also the antenna realized as an LC-circuit. No additional external
power supply is necessary for the transponder because it receives power from the RF
field generated by the base station. Data are transmitted by modulating the amplitude
of the RF field. The TK5551 can be used to adjust and modify the ID code or any other
stored data, e.g., rolling code systems. The on-chip 264-bit EEPROM (8 blocks,
33 bits per block) can be read and written block wise from the base station. The blocks
can be protected against overwriting. One block is reserved for setting the operation
modes of the IC. Another block can obtain a password to prevent unauthorized writing.
Figure 1.
System Block Diagram
Base station
U2270B read/ write IC
MARC4 series
microcontroller
RF field
TK5551 Transponder
(e5551 + coil + C in plastic package)
C
e5551
Power
Data
Coil
Rev. 4709B鈥揜FID鈥?0/03

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